Hanxiang Wu

Oct 31, 2024 | science.org | Jerika J. Barron |Zhenyu Wang |Roberto Arbore |Hanxiang Wu

Editor’s summaryElectrocaloric materials can pump heat through a phase transition triggered by an electric field. However, designing devices that maintain a large temperature difference can be challenging. Wu et al. designed a heat pump using layers of a ferroelectric polymer that also changes shape under an electric field. A cascade of several polymer film stacks provides efficient thermal transfer, reaching a temperature differential of 14 K.